Chemical Analysis of Diesel Particulate Matter and an Evaluation of Artifact Formation / FS-C Lee, TM. Harvey, TJ. Prater, MC. Paputa, D. Schuetzle
- Conference Author:
- Sampling and Analysis of Toxic Organics in the Atmosphere (1979 : Boulder, Colo.)
- Physical Description:
- 1 online resource (19 pages) : illustrations, figures, tables
- Additional Creators:
- Lee, FS-C, Harvey, TM., Prater, TJ., Paputa, MC., Schuetzle, D., American Society for Testing and Materials, and ASTM International
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- Methods for the sampling and analysis of diesel particulates have been evaluated. A number of different solvents were utilized for the extraction of diesel particulates. Benzo(a)pyrene (BaP) standards spiked on glass-fiber or quartz-fiber filters were found to be oxidized during the sampling of ambient air or exhaust gases. Such degradation was largely reduced by using filters with more inert surfaces, such as Teflon membranes. The results suggest that sample degradation due to gas-BaP reactions requires the presence of a reactive or catalytic medium, such as the glass-fiber filter surface. Such reactions can be minimized with the proper choice of a more inert filter surface such as Teflon. Oxidation of BaP was also observed in diesel extracts during analytical procedures or prolonged storage for several weeks in the dark. The implication of the sampling and analytical artifact problem is a question not only of analytical recovery but also of whether significant biologically active conversion products are produced. Analytical methods to study the extraction efficiency for BaP from diesel particulates are presented. High-performance liquid chromatography (HPLC), high-resolution mass spectrometry (HRMS), and gas chromatography-mass spectrometry (GC-MS) are being investigated for the identification and analysis of these species and preliminary results indicate the presence of a number of oxygenated polynuclear aromatic hydrocarbon (PAH) compounds, which potentially could be produced by oxidation during sampling and analysis.
- Dates of Publication and/or Sequential Designation:
- Volume 1980, Issue 721 (January 1980)
- Polynuclear aromatic hydrocarbon (PAH)
- Gas chromatography-mass spectrometry (GC-MS)
- Particulate sampling
- Artifact formation
- Solvent extraction
- Glass-fiber filter
- Teflon membrane filter
- Radioactive tracers
- Toxic organics
- Air particulates
- Diesel particulates
- Environmental trace analysis
- Mass spectrometry
- Extraction efficiency
- High performance liquid chromatography
- Gas chromatography
- 9780803147898 (e-ISBN)
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 15.
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- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1980. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details:
- Mode of access: World Wide Web.
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- ASTM International PDF Purchase price USD25.
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